John barclay



(No Model.)

' Y J. BARGLAY.

APPARATUS POR DRY'ING GRAIN.

` UNITED STATES PATENT OFFICE.

JOHN BAROLAY, OE TORONTO, ONTARIO, CANADA.

APPARATUS FOR DRYING GRAIN.

SPECIFICATION forming part of. Letters Iatent No. 255,564, dated March28, 1882, Arlrplication iiledDecembcr 15, 1881. (No model.)

'.To all whom it may concern Be it known that I, JOHN BAROLAY, a subjectof the Queen of Great Britain, residing at the city of Toronto, in thecounty of York, in the Province of Ontario, Oanada,have inventedacertain new and usei'ul Apparatus for Drying Oats and other Grain, ofwhichthe following is a specification.

The object of the invention is to produce a machine in which the fulle'ect of the tire may be secured for the purpose of drying oats andother grain withoutpermitting the same to be injured by the smoke; andit consists essentially of two vertical perforated cylinders, one placedwit-hin the other so as to leave a space `between the circumference ofthe two, which space is filled with the grain to be dried. Air underpressure is introduced into the inner cylinder, which air nds its waythrough the perforations in the cylinder and through the graincontainedbetween them into the outer chamber, through which the smoke from the lfurnace passes, but is prevented reaching the grain through the pressureof the escaping heated air.

The flues and other details `of construction are arranged substantiallyas `hereinafter eX- plainetl.

"In the drawings, Figure l is a section on line c w on Fig. 3. Fig. 2 isa section on line :r y on Fig. 3. Fig. 3 is a horizontal section. Fig.et is a view ofthe ring.

A is the outercasing or walls of the machine, preferably made of brick,but which maybe constructed of iron.-

B is a perforated cylinder placed vertically within the casingA, andhaving placed within its diameter a similar perforated cylinder, G. Thislatter cylinder is provided with a cap,1), and when'the cylinders aremade to revolve the inner cylinder, C, is connected tothe outercylinder, B, by means of the vertical slats or partitiousE. Thesepartitions divide the space between the inner and outer cylinder intocompartments for containing the grain.

F is a pulley fixed to the centerof theinner cylinder. This pulley issuitably connected to a motor power for causing tho cylinder to revolve5 `but insteadof the pulley it will of course be possible to providegearing or other means for conveying the desired rotary motion to thecylinders.

G is a furnace, preferably situated on the outside ofthe casing A. Onone side ofthek furnace G, `I form an airspace, ct, which airspace isconnected with the pressurefan H, and is provided with tubes I, passingthrough the furnace G into the lower smoke-chamber, A', wherein theycommunicate with an air-Hue leading into the inner cylinder, O. Owing tothis connection, it will be seenithiat the air forced into the air-spaceA by the fan H will, while passing through this space and through thetubes I, become heated before Ending its way into the cylinder C.Thesmoke from the furnace passes, as indicated by arrows, from thefurnace G into the lower smoke-chamber,

A', from whence it escapes through perforations made in the door b intothe upper chamber, A2, finally escapingthrough the chim ney J.

It will thus be seen that the heat of the lire isthoroughly utilized,the air which is forced into the cylinder B, being heated by passingthrough the air-space ou one side of the furnace and through the tubeswhich pass over the re and into the lower smokerchamber,

whichis thoroughly heated by the smoke, not4 konly heating the tubes inthe lower chamber,

but while passing through the upper chamber it heats the outer cylinder,but is prevented from enteringinto the grain contained between' the twocylinders by the pressure of the heated air escaping through theperforations inthe cylinders.

In order that the grain may be thoroughly driedand at the saine time beautomatically withdrawn, I provide means by which a small quantity ofgrain will escape at stated intervals. There are several means by whichthis desired end may be accomplished. One plan, which I think will befound preferable, is to arrange the cylinders so that they may. becaused to revolve slowly within the upper chamber, A2, their lower endsbeing pivoted upon the door b. A hole, dis madeintheoor b,immediately-below the space between the two cylinders, this hole beingabout the samediameter as the width of the said space, and is providedwith a spout, K, leading out of the lower chamber, A. As the cylindersrevolve, the partitions E cause the grain to travel around also, and asin this manner all points in the circumference will at some time duringtheir revolution come opposite to the hole d,

the grain will be removed with regularity from the space around theentire circumference ot' the cylinder. As the grain is thus removed thatremaining between the cylinders will be constantly shifted, which actionis so desira,

, as all parts in turn will thereby be subjected to the saine lie-fit.

While I consider the revolving cylinders of gieat advantage, it will ofcourse be seen that thc grain may be removed withoutthis action. Toaccomplish this a ring might be placed 011 the bottom of the cylinders,closing the space between the two. rIfhis ring would be caused torevolve, and, havingahole in its bottom, would permit the escape ofacertain portion of the grain, carried by a scraper placed on the bottomof the wheel or ring, to the hole d, made in the Hoor b. To make thisequivalent clearer, I exhibit the forni of thebottom in Fig. 4. ln thisfigure, e represents the ring iliade to cover the space. between the twocylinders, and is provided with a scraper,f, on one side of the hole g.vlt will thus be seen that the grain which falls through the hole g willbe carried along the tioor b till the hole d is reached, when it willescape through the spout K, so that the grain may be withdrawn from itas required.

Instead. of providing means, as described, by which the grain 'iswithdrawn at regularintervals, a discharge-spout may be arranged towithdraw the grain in charges, in which case means to cnt oli the supplyshould be provided. I may also mention here that the apparatus may bearranged so that the smoke will pass through the center of the innercylinder, and

the air under pressure through the chambers.-

I am aware that it is not new to force heated airthrough grain for thepurpose of heating the same; and I am also aware that it is not new toforce smoke and other products Ofcombustion of a furnace directlyagainst the grain, andI do not claim either invention.

1. The combination, with two perforated cylinders placed one within theother and adapted to hold grain between them, of a furnace, means ofsupplying heated air under pressure, and passages for conveying theproducts of combustion-from the furnace to one side of the cylinders andheated air under pressure to the othersideofsaidcylinders,substantiallyas and for the purpose specified.

2. The combination, with two revolving perforated cylinders adapted tohold grain between them, of a furnace and a pressure-fan, said furnacedischarging its products of combustion into a chamber surrounding thecylinders, and the pressure-fan forcing air through. said furnace to theinterior of the cylinder and through thesides ofthesame, substantiallyas described, and for the purpose specified.

3. In a machine for drying oats and other grain through the applicationof artificial heat, and in which the grain is contained between tworevolving perforated cylinders, the one being placed within the other,the top of the inner cylinder being closed and its bottom connected to ablast-pipe leading from a pressurefan, vertical partitions arranged todivide the space between the two cylinders into compartments, incombination with a floor placed below the revolving cylinder andprovided with a hole communicating with a spout through which the grainis discharged, substantially as specified.

4. rIhe combination, with a receptacle for holding grain, and a chambersurrounding the same, ofa furnace adapted to discharge its products ofcombustion into said chamber, an air-passage leading through saidfurnace froin an air-space close to thelatter, and adapted to dischargeheated air within the spaceiiiclosed by the grain receptacle,substantially as and for tlie purpose specified.

5. The combination, with a receptacle for holding grain, of a furnace,and means, substantially as described, for separately conducting theproducts of combustion of said furnace and the air heated by the same tothe grain.

receptacle, whereby the air acting against oneV face thereof willprevent the smoke and gases from passing through the opposite face tothe grain, as set forth. f

6. The combination, with the perforated revolving cylinders B C, of thechamber surrounding said cylinders, the furnace G, the airpassage I,passing through said furnace, and the perforated plate b at the base ofthe cylinders, substantially as and for the purpose specified.

7. The combination, with the revolving cylinders B C, ofthe furnace Gand pipes I, the former discharging at the exterior of the cylinders andthe pipes at the interior of the saine, and means, substantially asdescribed, for gradually discharging` the grain from the space betweenthe cylinders, as and for the purpose specified.

JOHN BARGLAY.

Witnesses:

C. W. BALDWIN, H. H. WARREN.

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